Decorative extrusion



FIG. 1 is a top plan view of a decorative extrusion showing my new design;

FIG. 2 is a front elevational view thereof; the rear view being a mirror image of the front side shown; and,

FIG. 3 is a right side elevational view thereof, the left side being a mirror image of the right side shown. 

The ornamental design for a decorative extrusion, as shown and described. 